King Joseph Bonaparte left Madrid with his 5,850-strong reserve on 23 July 1809 to fight at the Battle of Talavera. Wanting to face the combined British and Spanish army with his maximum strength, the king left Belliard, the governor of Madrid, with only about 4,000 troops. Belliard's force consisted of one brigade from the division of Jean-Joseph, Marquis Dessolles and a few pro-French Spanish troops. There were three potential threats, a Portuguese column of unknown strength led by Robert Thomas Wilson, the Spanish Army of La Mancha under Francisco Javier Venegas, and an insurrection. In case any of the threats developed, Belliard was ordered to withdraw into the Retiro forts for a last-ditch defense.[1] After his defeat at Talavera, Joseph ordered Belliard to send away all non-combatants from Madrid and prepare to defend the Retiro. However, Venegas failed to take advantage of his opportunity, Wilson's force was too weak, and the crisis passed.[2]